Ellen Lax

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Ellen Lax (born August 27, 1885 ; † after 1974) was an industrial physicist who became known through the publication of the three-volume table book Taschenbuch für Chemiker und Physiker together with Jean D'Ans . The first volume appeared for the first time in 1943, to this day the so-called D'Ans-Lax is widely used as a reference work for laboratory work. She also worked on the Landolt-Börnstein table work.

Life

Ellen Lax grew up in a wealthy family in Minden , her father was a manufacturer of biochemical products and a businessman. She completed the secondary school for girls and took a late high school diploma in 1910 at the age of 25. She then studied in Berlin and did her doctorate in 1919 under Walther Nernst on electrical conductivity under pressure. Her studies were interrupted by the First World War until 1918, during which time she worked as an X-ray and operating room nurse as well as a bacteriologist and laboratory assistant.

Scientific activity

Shortly after completing her doctorate, she started working for Osram in Berlin in 1919. Working with Marcello Pirani in 1925 at the Osramgesellschaft in Berlin, she developed two processes for manufacturing the interior matting of lightbulbs, which were granted to Osram in 1927 . In 1934 she published a detailed article on lighting technology. Until Pirani emigrated in 1936, she worked in his scientific department, then she began working on the paperback for chemists and physicists for Springer-Verlag , which she had already come into contact with through her publications in the Handbuch der Lichttechnik. In 1945 she had to interrupt her work for Springer-Verlag and found a job at the Institute for Research on Teaching Aids at the Faculty of Education at Humboldt University . In 1950 she continued working on the tables for Springer-Verlag. She also contributed to the Handbook of Physics .

Individual evidence

  1. ↑ Ellen Lax: On the change in resistance in wires due to stretching. Inaug.-Diss., Berlin 1919, OCLC 69012168 .
  2. ↑ a b Dr. phil. Ellen Lax 90 years: 1885 - August 27 - 1975. In: Physik Journal. 31, 1975, pp. 366-368, doi: 10.1002 / phbl.19750310805 .
  3. ↑ B. Duschnitz: The invention of the interior frosted light bulbs. In: Polytechnisches Journal . 345, 1930, pp. 187-188.
  4. ↑ Ellen Lax: Modern light generation by means of gas discharge lamps. (= Deutsches Museum: Treatises and reports. 6th year, issue 3). VDI-Vlg., Berlin, 1934, DNB 364969091 .

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personal data
SURNAME Lax, Ellen
BRIEF DESCRIPTION German industrial physicist
DATE OF BIRTH August 27, 1885
DATE OF DEATH after 1974